On Ca II Emission as an Indicator of the Age of Young Stars
Date
2004
Authors
Song, Inseok
Zuckerman, B
Bessell, Michael
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
Chromospheric emission in the Ca II H and K lines has often been used as an age diagnostic for solar mass stars. For 20 such stars with ages less than a few hundred megayears, we compare Ca II ages derived by Wright et al. with ages we derive based on a combination of lithium abundance, X-ray activity, and Galactic space motion. Typically, the Ca II ages are noticeably older than the lithium/X-ray ages, suggesting that a recalibration of the Ca II ages may be necessary.
Description
Keywords
Keywords: Stars: activity; Stars: fundamental parameters
Citation
Collections
Source
Astrophysical Journal, The
Type
Journal article